2126320901 has 2 divisors, whose sum is σ = 2126320902. Its totient is φ = 2126320900.

The previous prime is 2126320891. The next prime is 2126320943. The reversal of 2126320901 is 1090236212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1076496100 + 1049824801 = 32810^2 + 32401^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2126320901 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2126320961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1063160450 + 1063160451.

It is an arithmetic number, because the mean of its divisors is an integer number (1063160451).

Almost surely, 2^2126320901 is an apocalyptic number.

It is an amenable number.

2126320901 is a deficient number, since it is larger than the sum of its proper divisors (1).

2126320901 is an equidigital number, since it uses as much as digits as its factorization.

2126320901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 2126320901 is about 46112.0472436434. The cubic root of 2126320901 is about 1285.9071251276.

The spelling of 2126320901 in words is "two billion, one hundred twenty-six million, three hundred twenty thousand, nine hundred one".